【C12】
A. for
B. from
C. with
D. to
【C4】
A. interaction
B. intercourse
C. intersection
D. interference
A.envelopB.accomplishC.envelopingD.accomplishing
A. envelop
B. accomplish
C. enveloping
D. accomplishing
A.servicingB.encircleC.encirclingD.served
A. servicing
B. encircle
C. encircling
D. served